Abstract
Since the launch of the Herschel Space Observatory, our understanding about the photo-dissociation regions (PDR) has taken a step forward. In the bandwidth of the Fourier Transform Spectrometer (FTS) of the Spectral and Photometric Imaging REceiver (SPIRE) on board Herschel, ten CO rotational transitions, including J = 4 - 3 to J = 13 - 12, and three fine structure lines, including [<TEX>$C{\small{I}}$</TEX>] 609, [<TEX>$C{\small{I}}$</TEX>] 370, and [<TEX>$N{\small{II}}$</TEX>] <TEX>$205{\mu}m$</TEX>, are covered. I present our findings from the FTS observations at the nuclear region of M83, based on the spatially resolved physical parameters derived from the CO spectral line energy distribution (SLED) map and the comparisons with the dust properties and star-formation tracers. This article discusses (1) the potential of using [<TEX>$N{\small{II}$</TEX>] 205 and [<TEX>$C{\small{I}}$</TEX>] <TEX>$370{\mu}m$</TEX> as star-formation tracers; (2) the excitation mechanisms of warm CO in the nuclear region of M83.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
